<template>
	<view>
		<!-- 搜索框 -->
		<view class="search-box">
			<uni-search-bar :radius="100" @input="input" cancelButton="none"></uni-search-bar>
		</view>
		<!-- 搜索列表 -->
		<view class="sugg-list" v-if="searchResults.length !== 0">
			<view class="sugg-item" v-for="(item, index) in searchResults" :key="index" @click="gotoDetail(item.goods_id)">
				<view class="goods-name">
					{{ item.goods_name}}
				</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		<!-- 历史记录 -->
		<view class="history-box" v-else>
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17"  @click="cleanHistory"></uni-icons>
			</view>
			<!-- 历史记录列表 -->
			<view class="history-list">
				<uni-tag :text="item" v-for="(item,index) in historys" :key="index" @click="gotoGoodsList(item)"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null,
				kw:'',
				searchResults:[],
				historyList:['1','12']
			};
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
		},
		methods:{
			// 获取输入框的值
			input(e){
				//console.log('e的值',e)
				clearTimeout(this.timer)
				this.timer = setTimeout(() => {
					this.kw = e
					this.getSearchList()
					//console.log('关键词',this.kw)
				},500)
			},
			// 获取搜索框列表
			async getSearchList(){
				if(this.kw === ''){
					this.searchResults = []
					return
				}
				const { data:res } = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
				if(res.meta.status !== 200) return uni.$showMsg()
				this.searchResults = res.message
				this.saveSearchHistory()
			},
			// 保存搜索历史
			saveSearchHistory(){
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList = Array.from(set)
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			// 跳转到商品页
			gotoDetail(id){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id=' + id
				})
			},
			// 清空历史记录
			cleanHistory(){
				this.historyList = []
				uni.setStorageSync('kw','[]')
			},
			// 跳转到商品页
			gotoGoodsList(kw){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query=' + kw
				})
			}
			
		},
		computed:{
			// 调整历史记录顺序
			historys(){
				return [...this.historyList].reverse()
			}
		}
	}
</script>

<style lang="scss">
.uni-searchbar{
	display: flex;
	flex-direction: row;
	position: relative;
	padding: 16rpx;
	background-color: #C00000;
}
.search-box{
	position: sticky;
	top: 0;
	z-index: 999;
}
.sugg-list {
  padding: 0 5px;

  .sugg-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;

    .goods-name {
      // 文字不允许换行（单行文本）
      white-space: nowrap;
      // 溢出部分隐藏
      overflow: hidden;
      // 文本溢出后，使用 ... 代替
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}
.history-box {
  padding: 0 5px;

  .history-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }

  .history-list {
    display: flex;
    flex-wrap: wrap;

    .uni-tag {
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
